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  1. www.webmd.com › news › defaultThe latest breaking health news and alerts - WebMD

    2022年6月28日 · Latest Health News. Most U.S. Adults Will Have Heart Problems By 2050: Report By 2050, more than 6 in 10 U.S. adults will have cardiovascular disease, according to a new projection by the American ...

  2. www.webmd.com › vitamins › aiMELATONIN: Overview, Uses, Side Effects, Precautions, ...

    Melatonin is a hormone made in the body. It regulates night and day cycles or sleep-wake cycles. Melatonin in supplements is usually made in a lab. Darkness triggers the body to make more...